13. A producer is also known as a(n) (A)heterotroph (B) saprotroph (C) autotroph (D)scavenger

## Step 1<br />In the field of biology, organisms are classified based on their nutritional habits. Producers, also known as autotrophs, are organisms that can produce their own food using light, water, carbon dioxide, or other chemicals. They are the first level of the food chain and are capable of photosynthesis, a process that converts light energy into chemical energy.<br /><br />## Step 2<br />On the other hand, heterotrophs are organisms that cannot produce their own food and must obtain it by consuming other organisms. They are also known as consumers and are the second level of the food chain.<br /><br />## Step 3<br />Saprotrophs are a type of heterotroph that feeds on dead and decaying organic matter. They are not producers but are consumers.<br /><br />## Step 4<br />Scavengers are animals that feed on dead organisms that they did not kill themselves. They are also not are consumers.